> First, I was surprised about the idea that there must be an exact description of dangers before someone can investigate the dangers and consider them.

Of course there has to be a description of dangers before someone can consider them, otherwise how do we evaluate risk? How else do we know whether we are overreacting? It's not like the "ruin" people suddenly woke up yesterday morning in a panic. They have been talking about this for years. In all that time, there has been no dispassionate but thorough analysis of the dangers?